Grammar Mechanics Worksheets

Grammar of Numbers Worksheets: Writing Numbers Correctly in Sentences

Knowing the grammar of numbers helps students write clearly and professionally. Numbers show up everywhere in everyday writing—dates, times, addresses, measurements, and quantities—and students often need guidance on when to write numbers as words and when to use numerals. These Grammar of Numbers worksheets give learners structured practice so they can apply number rules consistently in their own sentences.

This worksheet set focuses on common number-writing skills such as starting a sentence with a number, choosing between numerals vs. words, writing numbers within paragraphs, and using hyphens in compound numbers (for example, twenty-one, thirty-two, etc.). Students also practice editing sentences to correct number formatting and improve readability.

Teachers can use these printables for direct instruction, small-group intervention, bell ringers, homework, or quick grammar review. Parents and tutors can use them at home to reinforce writing conventions and support confident, accurate sentence construction.

Browse and download our free printable grammar of numbers worksheets in PDF format below to help students master how to write numbers correctly in English.